12620157 has 8 divisors (see below), whose sum is σ = 18356640. Its totient is φ = 7648560.

The previous prime is 12620149. The next prime is 12620203. The reversal of 12620157 is 75102621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12620157 - 2³ = 12620149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191182 + ... + 191247.

It is an arithmetic number, because the mean of its divisors is an integer number (2294580).

Almost surely, 2^12620157 is an apocalyptic number.

It is an amenable number.

12620157 is a deficient number, since it is larger than the sum of its proper divisors (5736483).

12620157 is a wasteful number, since it uses less digits than its factorization.

12620157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382443.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 12620157 is about 3552.4860309366. The cubic root of 12620157 is about 232.8206974607.

Adding to 12620157 its reverse (75102621), we get a palindrome (87722778).

The spelling of 12620157 in words is "twelve million, six hundred twenty thousand, one hundred fifty-seven".